CASTLE. ABC MONDAY NIGHTS.
A murder-mystery writer and a detective team up to catch a serial killer who is reenacting murders from his books. Once the case is solved, the unlikely pair continue to work together to probe New York City's most unusual homicides.
It stars Nathan Fillion, as Richard Castle some of you might remember him from Firefly. Always liked him. I really enjoyed the first episode, thought it was pretty wonderful actually.